One of our main mechanisms for snow producing storms along the Front Range is what we call upslope: winds that push up against the Rockies and create the lift needed to produce precipitation, which in the winter usually falls in the form of snow. For the northern urban corridor that's typically a northeasterly or easterly wind, but that differs depending on where along the Front Range you are located. With a classic cutoff low snowstorms, that upslope is deep – meaning we have strong upslope w